A fingerprint identification module and mobile terminal

A fingerprint recognition module and mobile terminal technology, applied in the field of communication, can solve the problems of fingerprint acquisition signal interference and the like

Active Publication Date: 2020-03-06
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if the user uses the fingerprint to unlock, the common mode interference signal will interfere with the fingerprint acquisition signal emitted by the fingerprint identification module.

Method used

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  • A fingerprint identification module and mobile terminal
  • A fingerprint identification module and mobile terminal
  • A fingerprint identification module and mobile terminal

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] The terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For exam...

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Abstract

The embodiment of the present invention discloses a fingerprint identification module and a mobile terminal. The fingerprint identification module includes a fingerprint chip, a cover plate, a circuit board and a metal ring, wherein: the cover plate is set on one side of the fingerprint chip; the circuit board is set on the The fingerprint chip is away from the other side of the cover; the metal ring surrounds the cover, and the metal ring is electrically connected to the conductive reinforcing plate of the mobile terminal. The embodiment of the present invention can reduce the interference of the common-mode interference signal on the fingerprint collection signal when the mobile terminal is charging.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a fingerprint identification module and a mobile terminal. Background technique [0002] The application of mobile terminals such as smart phones is more and more extensive, and people in modern life basically have a mobile phone in hand. At present, many mobile phones have a fingerprint unlocking function. When the fingerprint is unlocked, the sensor of the fingerprint identification module emits a fingerprint acquisition signal (for example, a square wave signal, a sine signal, etc.), and the fingerprint acquisition signal can form fingerprint image data by collecting the capacitance between the finger and the sensor. [0003] When the mobile phone is charging, when the switch tube in the charger is turned on and off at high speed, a high-frequency interference signal, that is, a common-mode interference signal, will be formed. At this time, if the user unlocks with a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06V40/13
CPCG06V40/13
Inventor 张海平
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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